With a t3/t04e turbo what is the difference between the 50 trim and 57 trim? besides its bigger.

57 trim flows more? but less effiecent?

50 trim flow less?

what is a better turbo for a LS shooting for 300 whp on pump and 400 on race fuel?

 

i have a built LS and im running the 57 and i made 402 at 25psi......tuner said that was almost maxing out my turbo......im not sure about the other, but maybe my numbers will help

 

thanks for the reply....anybody else?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EF’n Turbo &raquo;</TD></TR><TR><TD CLASS="quote">i have a built LS and im running the 57 and i made 402 at 25psi......tuner said that was almost maxing out my turbo......im not sure about the other, but maybe my numbers will help</TD></TR></TABLE>

what .AR on both sides is it?

 

.63 turbo .60 compressor

 

no, i was directing that at EF'n Turbo.

 

I've seen 50 trims make well over 450whp on ls/vtec's in the 25psi range. Can't go wrong with either!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AaronJ &raquo;</TD></TR><TR><TD CLASS="quote">

what .AR on both sides is it?</TD></TR></TABLE>


.63 and .60

 

I personally have the 50 trim, but ive also ridden in cars with the 57 trim. i personally prefer the response of the 50 trim more. it just seems to suit my b16 better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EF’n Turbo &raquo;</TD></TR><TR><TD CLASS="quote">i have a built LS and im running the 57 and i made 402 at 25psi......tuner said that was almost maxing out my turbo......im not sure about the other, but maybe my numbers will help</TD></TR></TABLE>

is that lane's old car?

and who did the tuning, rlz?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostdummy &raquo;</TD></TR><TR><TD CLASS="quote">With a t3/t04e turbo what is the difference between the 50 trim and 57 trim? besides its bigger.

57 trim flows more? but less effiecent?

50 trim flow less?

what is a better turbo for a LS shooting for 300 whp on pump and 400 on race fuel?</TD></TR></TABLE>

I've got the same turbo.

406.8 @ 21psi.

I think with a few extra mods, thats with a stock intake mani.

I think upping the boost and a few more supporting mods, I can do close to 475whp w/it...

 

I say 60 trim. Why loose the extra flow with the 57, and 50, and a marginal decrease in lag?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s13-t &raquo;</TD></TR><TR><TD CLASS="quote">

is that lane's old car?

and who did the tuning, rlz? </TD></TR></TABLE>

I have no Idea who lane is, lol and I had everything done in Maryland

 

Yeah I have been thinking about a 50 trim. I have a 57 trim on a B16a2 and I don't see full boost (16 psi) until around 5300. Is this normal, anyone? I have heard of LS motors on here hitting full boost around 4300. I don't know if people are exagerating or what, but that seems really fast compared to mine.

 

50 trim precision(.63 A/R) on my ls/vtec, 10 psi by 4700

2.5" downpipe, 2.25" exhaust

Also: I have read on more than one occasion that the 50 trim compressor wheel in the SC50 is very efficient, more so than the 57 trim.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dialectic &raquo;</TD></TR><TR><TD CLASS="quote">Yeah I have been thinking about a 50 trim. I have a 57 trim on a B16a2 and I don't see full boost (16 psi) until around 5300. Is this normal, anyone? I have heard of LS motors on here hitting full boost around 4300. I don't know if people are exagerating or what, but that seems really fast compared to mine.</TD></TR></TABLE>


Whats the turbine housing A/R? The turbine housing size has a big effect on spool time.

 

.60 compressor, .63 exhaust.

 

57 trim compressor, .63ar turbine wheel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ELSpool &raquo;</TD></TR><TR><TD CLASS="quote">I've seen 50 trims make well over 450whp on ls/vtec's in the 25psi range. Can't go wrong with either!</TD></TR></TABLE>

I agree.

50 trim for me.